barratt



W. BARRATT.

ATMOSPHERIC GAS BURNER.

APPLICATION FILED APR.2. I919.

Lama wz. Patented July 1, 1919.

WILLIAM BARRATT, F GOBURG, VICTORIA, AUSTRALIA. i

' amosrnnmc ens-Brianna To all whom it may concern Be it known that I,- WILLIAM BARaAT a subject of the King of Great Britain, re-

siding at 149 Barrow street, Coburg, in the State of Victoria, Commonwealth of Aust18.ll21,1]180l1311l0, have invented certain new and useful Improvements in Atmospheric Gas-Burners, of which the following is a specification.

This invention relates to improvements in atmospheric gas burners and it is directed more particularly to gas burners of that type which is employed to heat small furnaces, bath heaters and the like.

The object of the present invention is to provide a burner wherein a thorough admixture of gas and air will be effected in a proper'proportion to insure the complete Elli till combustion of the gas directly it escapes from the burner and thereby produce a maximum of heat from the amount of gas consumed.

The invention briefly consistsin providing a mixing chamber wherein is located an axially dlsposed gasjet which is connected to a supply pipe and in arranging a number of holes in the periphery of the said chamber for the admission of air. The forward end of themixing chamber in line with to enable a properly proportioned mixture to be efi'ected from a given pressure of gas.

Referring now to drawings Figure 1, is a View in sectional side elevation of a burner constructed in accordance with the present invention, and

Figs. 2, and 3, are views in sectional end elevation taken on the dotted lines 22 and 3-3, respectively, of Fig. 1. I The burner comprises a mixing chamber a of cylindrical or other approved formation having a hole I) located centrally in one end and the other end provided with a tapered nozzle 6. A gas jet d is screwed or otherwise rigidly fitted into the hole 6 in the outerend of the mixing chamber and the said as jet, preferably is formed with a tapered bore 6 as shown by the dotted lines in Fig. 1 of the drawings.

The gas et d is connected to a gas supply pipe (not shown) in any approved way and this pipe can be provided with a cock (not Specification of Letters Patent:

shown) or like device for regulating the quantity of gas passing therethrough.

Patented July 1, 1919. r Application filed April 2, 1919. Serial No.287,049. I i v A number of air admission holes f are formed in the periphery of the mixing chamber a and means such as a sleeve valve 9 furnished with holes it is fitted rotatably over the said chamber. If preferred the sleeve valve. g, can be fitted slidably over the mixing chamber instead of rotatably as shown in the drawings. The holes f in the walls of the mixing chamber and the holes 7 1 in the sleeve valve 9 correspond in size and shape and are so arranged that the sleeve valve can be adjusted by partially rotating the same to regulate the admission of air to the mixing chamber.

A nozzle 71 is fitted concentrically around the nozzle 0 on the end of the mixing cham her and the annular space j between the two nozzles is sufliciently large to permit of a free draft of air therethrough. The outer nozzle c' is of greater length than and extends beyond the nozzle c on the mixing chamber and means may be provided for regulating the admission of air to the rear end of the outer nozzle.

The outer nozzle 6 can be formed integrally' with the inner nozzle 0 and supported thereon by radial arms or spiders 2" as shown in Fig. 2, of the drawings.

The nozzles c and 2' can be of any desired length and shape to insure a required draft and the air inlets to the mixing chamber and to the nozzles can be adjusted to insure the correct amount of air to be admitted at the different points to effect a properly proportioned mixture and consequently the generation of a very hot flame when the said mixture is ignited at the end of the 1 outer nozzle.

ture and will be found highly efiicient by metal workers such as silversmiths and goldsmiths for melting metal in crucibles and the like as it is equally as or more effective and requires less attention than those 'an outer nozzle open at its inner end and in which the firstnamed nozzle is arranged, said outer nozzle being directly permanently connected to and carried by the first named nozzle and detachable therewith from said 15 member, and the open rear end of said outer nozzle forming an air intake independently of the mlxing chamber, and regulating means to vary the effective area of the air inlet opening of the said first named mem- 20 her.

In testimony whereof I have afiixed my slgnature in the presence of two witnesses.

WILLIAM BARRATT.

- Witnesses:

ALFRED GURR, HARRY N. MATTERS. 

